DIY: Rear Differential Oil Change

Vbp6US

Can I use the regular LSD Red Line oil listed in the OP's DIY in a Base model open differential? I just ordered two...should have asked this question before I suppose.

FricFrac

Yes it just has a friction modifier in it.

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'09 370Z - '93 300ZX Vert - '83 280ZX - '83 280ZXT -'81 280ZXT stroker - '72 240Z - Stillen CBE, HFC, G3, Grounding Kit, Sways // Swift Spring // H&R 15mm // 5% Tint // Clear Bra //

heebus

I did this on Saturday. Great write up! Super simple, no pics necessary.

Vbp6US

Sweet! Thank you for helping me get rid of this slight anxiety.

Vbp6US

Put some Red Line in there.

spearfish25

I've changed my rear diff oil three or four times now over the past 3 years. This past swap, the oil looked pristine while draining out. Compared to how terrible it looked the first few times, I'm not sure what that means...

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2013 Cadillac V-Wagon, RIP Z

m4a1mustang

You're getting older and slowing down?

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Doug@PTUNING

Is Red Line 75W90 GL-5 Gear Oil is correct for 370z Automatic drivetrain for diff fluid? I read the whole pages in this thread but I had to ask to double check to confirm. This is not for transmission flush, only for diff if you are asking.


Red Line 75W90 GL-5 Gear Oil
Red Line Synthetic Oil - Gear Oil for Differentials - 75W90 GL-5 Gear Oil

Thanks guy.

Dwight Frye

Can the differential change be done by backing up on Rhino ramps, or is it necessary/better to jack it up, and place jackstands to keep the car level ?
The ramps & jack I have, the stands I would need to buy.
Thanks

BuddyLee

My educated guess is that the pint that is unable to drain unless you take the whole diff cover off, that remains after draining the majority of oil out of the drain plug, has finally been diluted down after a few changes and the fluid looks much cleaner now.

I plan on doing my first diff change next week, 15k miles on my 2012. I am picking up a livestock syringe from Tractor Supply that I will be able to attach vinyl tubing to, so I may remove as much of the old gear oil out of the diff through the filler hole as possible without removing the whole cover.

I'll let you guys know if I'm successful or not.

Footloose301

I had just the rear end jacked up and I thought everything had come out and just to satisfy my curiosity I jacked up the front while the rear was still lifted and another pint poured out. I would recommend the whole car be level when doing this.

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2010 40th Anniversary 370Z

jetguy

anyone try royal purple max gear? my autoparts store dosnt carry the redline, so i think i will try the barney blood.

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Z1 intake tubes,K&N,sprint booster,side stripes,9500ix, blendmount,laser jammers,AVIC-X920BT,TS-C720PRS, PRS2200DT,2x BTA6250D,275/40/18 conti dw, dynamat,reversed the +/- on the floor shift,tint,cover

jetguy

so far, so good on the royal purple max gear. felt great on first drive after change!
!

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Z1 intake tubes,K&N,sprint booster,side stripes,9500ix, blendmount,laser jammers,AVIC-X920BT,TS-C720PRS, PRS2200DT,2x BTA6250D,275/40/18 conti dw, dynamat,reversed the +/- on the floor shift,tint,cover

jetguy

I say no. they are just solid metal washer. i just added a few ft/lbs when i tightened them.

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Z1 intake tubes,K&N,sprint booster,side stripes,9500ix, blendmount,laser jammers,AVIC-X920BT,TS-C720PRS, PRS2200DT,2x BTA6250D,275/40/18 conti dw, dynamat,reversed the +/- on the floor shift,tint,cover

Mwagner07

Just wanted to post - Spoke with Joel at Z1motorsports.com 770-838-7777

for 2009 6MT. I'm doing both my Tranny and Rear Diff fluids.
4 x OEM Transmission/ Diff Drain Plug Sealing Washer (38351B) - $10.40
2 qt. x ENEOS 75w90 GL5 Synthetic Gear Oil - $19.00
3 qt. x Red Line MT-85 - $34.32 (Tranny Fluid for the 370Z)
Total order with shipping $74.77

Thanks Spearfish for your DIY on both the Rear Diff and Tranny..